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An autopsy is planned for Monday, Amick said. Preliminary results, such as the cause of death, will be available by Monday afternoon. However, toxicology results can take more than two weeks, he said.

Lt. Tim Smith of the York County Sheriff's Office said he did not see any alcoholic beverages containers at the pier. However, he said, "the friend said they drank a couple of beers."

The Sheriff's Office responded to a drowning call at the Allison Creek boat landing around 7 a.m., Smith said. At that time, Caston's friend had been searching the water for him for about 15 minutes, Smith said.

The 37-year-old friend told police that he and Caston had jumped off the end of the pier into the water numerous times, according the a report from the York County Sheriff's Office.

Authorities searched the water, described as more than 5 feet deep, for about 30 minutes before finding Caston's body in front of a dock, about 4 feet from the fishing pier, where he originally dove into the water, Smith said.

"When we located him, he had been in the water for about an hour," Smith said.

The drowning, the first in York County in 2007, prompted officials to offer a warning.

"Swimming and drinking is never a good idea," Smith said. "Alcohol and water do not mix."